. >>> more problems tonight for toyota. the company is recalling hundreds of thousands of prius hybrids. many prius owners are just now hearing about this recall. >> reporter: frank, many toyota customers told us they bought a prius because of its gas mileage and dependability. tonight, school teacher marian mark drove her 2007 prius to the downtown toyota of oakland dealership to get her tires checked. she told us she wasn't aware of the latest recall. >> if there's a recall, i'm glad they're being honest and hoping to fix it. >> reporter: toyota is voluntarily recalling 600,000 priuses in the u.s. the 2004 through 2009 models. the problem is a potentially defective steering wheel. of the same cars, 300,000 may also have a faulty water pump that may cause the prius to stall. they will automatically check all priuses which come in for any type of service, to see if they're affected by the recall. if so, the prius will be fixed. toyota has said it has not had any reports of injuries. >> if they have any concerns at all, they